No bolt tightening without the correct force application point

The force loading point has an important role to play in tightening bolts to torque. The force loading point is the distance on the torque wrench between the middle of the square drive (pivot point) and the point at which you hold the handle, the so-called force application point.

They both describe the same point. But force application point is a better physical description and more precise. The expression clearly states that a physical variable (‘force’) is acting on something (‘application’) at a precise position (‘point’).

Torque wrenches are calibrated using a fixed force loading point length. If the force application point changes because the handle is held incorrectly, this lever length is shortened or extended. The bolt is then not tightened to the right torque.

It's simple: you will find a mark on the handle – it's usually in the middle. Hold the wrench so that it lies exactly between your ring and middle finger. Then the force application point will be right.

Depending on where the bolted joint is, a loose connection may result in serious consequential damage – and the associated recourse claims may be just as serious.

eClick is a technology developed by STAHLWILLE, which combines the benefits of electronic measurement and bolted joint evaluation with those of an audible and physical mechanical click.

Smart force loading point compensation ensures that an incorrect grip position is detected and the amount of torque actually applied is corrected. This function is built into eClick models 714 and 730D sizes 1, 2 and 4. This technology detects the influence of a modified force application point and compensates for it automatically. This ensures that the bolt is tightened to the correct torque even if the grip position is slightly wrong.